if you do something illegal in the city of no laws and come back will you get arrested

If you commit an illegal act in a place that claims to have "no laws," there would likely be no legal consequences because there are no laws to enforce. However, the concept of a city with no laws is purely hypothetical and does not exist in reality. In any real-world jurisdiction, engaging in illegal activities can result in arrest and prosecution if discovered by law enforcement authorities. It is always important to consider the jurisdiction and applicable laws before engaging in any activities.